Safe Driving第 32 / 120 题
You are driving a 40-foot straight truck at 35 mph on a dry road. What is the minimum safe following distance?
a.2 seconds
b.3 seconds
c.6 seconds
d.4 seconds
解析
Below 40 mph the rule is one second for every 10 feet of vehicle length, so a 40-foot vehicle needs 4 seconds. Two or three seconds is too little for that length, and 6 seconds would be the figure for a much longer vehicle or after adding time for higher speed.
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